Internal-combustion engine



Patented Mar 24 1, Trip? v UNITED STATES PATENT OFFE'C WALTER F. VOSE, 0F BLOOMINGTON, ILLINOIS.

I i INTERNAL-COMBUSTION; ElNGrINE.v

Application filed May 14,

To all whomit may concern: I

Be it known that I, IVALTER F. Vosn, a citizen of the United States of America, residing at Bloomington, in the county of McLean and State of Illinois, have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following isa specification. I

My invention relates to internal combustion engines,

The object of my invention is in the improvement of the so-called four cycle type of internal combustion engine whereby a more perfect oil seal between piston and cylinder walls result. l k Another object of my invention is in the particular structure and arrangement of the combustion chamber whereby a more efficient burning of the fuel may be effected.-

A further object is in the provision of an oil seal mechanism having in connection therewith means for by-passing any unused fuel or lubricating particles for the purpose of re-vaporization.

Other objects of my invention will appear in the following specification, in connection 1 portions are merely formal in engine des gn.

, In the drawings is shown an exceptionally elongated cylinder10 adapted to be connected to a formal crank case,not shown. This cylinder 10, is conventional in design,

except for its exaggerated length, and is surrounded by the. formal cooling means or water jacket 11, cast integrally therewith.

I have shown my invention as applied to a single cylinder: engine, but the applica-' tion may be extended to any'numher of cylinders and to any type of motor. p f Slidable within the cylinder 10 is the PiS n l2, having a head portion 13,-and a a sal ele ee-W ardl thereabove.

with the small combustion chamber This passageway thus forms a part of the lengthened. 7 'shown, lies directly beyond the intake valve and is also of formal design and operated jas does the intake valve by the conventional- .hy-pass is shown at 30 connecting said-space .mentsandhave not thought it necessary to go into an elongated description of the struc- 1923. Serial No. 638,781. a I

suhstantiallyfthe length of the cylinder wall 7 At 15 is shown a formal connectlng rod having connection with the crank shaft, not shown. A cylindrical sleeve l 16, flanged at its upper end as at 17 toengage receptive portions 18 in the upper ends of the cylinder, and lying flush therewith, extends downwardly in such manner as to form an inner wall for the cylindrical collar 14. l

In the figure the. piston is shown in its extreme upward position, or rather on. the compression stroke. vThe chamber there-' above, has inserted therein a cylindrical ,aluminumblock 19, having a passageway 20 therethru, connecting the valvemembers 21 22'.

explosion chamber,,inasmuch as the gases arefired'thru out its length, as well as above the valves and inlthe small chamber directly above the piston. The aluminum block 19 is shaped at' an intermediate part of the passageway to form a. slight venturi 23.

A single intake valve of the poppet type has been shown and is of conventional form except that due to the elongation of the cylin- 'der wall the stem 24 thereof, must also be A second exhaust valve, not

cam means, not shown. The intake, or valve throat, is shown at 25 and has connection with the formal carburetor manifold, not shown. J 1

A removable head 26 is bolted to the cylini derhlock at 26 and to thealuminum block at 2 formal design and has screwed therein a spark plug 28 co-operating with the formal electrical circuit. Above the piston collar, there appears'a small air space 29and a .100 with the intake or valve throat 25;

I haveconfined my showing merely to the portionsof a conventional internal combustion engine which constitutemy improveture andoperation of this conventional engine, in view ofits universal use. I f The only changes in the formal design of the engine itself is in the elongation of the cylindrical block and valve members, the o her p rti nsjbeing absolutely the sa e This removable head portion is of However, the upper end of the cylinder wall has been fashioned to receive the cylindrical sleeve 16 and also there has been a by-pass drilled between the intake port and airthe piston. Again, to provide an inner wall I for this extended piston, there has been inserted the sleeve 16. The above structure has been provided to prevent the escape of condensed fuel to the crank case chamber, not, shown, and thereby the dilution of the cylinder oil therein. My present structure has been designed for as near perfect an oil seal as possible, between thepiston and cylinder wall, wherebythere will be maintained a more constant compression and thereby a more efiicient operation of the engine under all conditions. .My structure l kewise prevents the products of combustion from coming in direct contact with the cylinder walls proper, inasmuch as the piston on its downward stroke does not go far enough to withdraw its extended collar por tion from between the cylinder wall and sleeve 16.

For the purpose of providing a more efii cient combustion chamber, which was neces sarily enlarged by. the extension of the cylinder wall and piston, the aluminumblock, having the described peculiar design. was nserted therein. This aluminum block has its passageway restricted in the form of a vcnturi at a point intermediate its length for the following purpose :On the intake I stroke the fuel gases are drawn thru the valve throat, around the valve and into the combustion chamber. In view of the fact that the fuel gases now travel a somewhat longer'distan'ce than usual the aluminum block has been restricted intermediate its length to increase the speed thereo-f ju'stlbefore entering the chamber directly above the piston and approximately at a time when they are exploded. This restriction of the aluminum block prevents condensation of the gases thus permitting a more eflicient operation of the engine. Although my present structure is designed to prevent the passage of any condensed. fuel to the crankcase. however, there a still further assurance of this in the following: An air space is left directly above theextended piston and a by-pass .is drilled to the intake throat. This air spacerwould ordi-' narily have. a slight vacuum onthe down stroke of the piston and a slight pressure on the p stroke thereot New in as the e was gathered in this portion either oil coming up from the crank chamber or condensed fuel from the combustion chamber, this residue would be forced into the intake throat and burned up in the next successive engine operation. For the purpose of transmitting this possible residue from the air chamber'29 I have described the simple by-pass.

However, my invention includes in a multi- ,collar portion, and means for by-passing any un-used fuel or lubricating particles in said chamber to be used in success ve engme operatlons. i

2. An internal combustionengine including valve and spark mechanism, an. elongated cylinder member, a reciprocating piston insaid cylinder having an extended collar portion, a flanged sleeve providing an inner wall for said collar, and means for by-passing un-used fuel and lubricatingpar- ,ticles'to be used in successive engine opera tions. w l

y 3. An internal combustion engine, including valve and spark mechanism, in combination, anelongated cylinder member, a reciprocating piston in said cylinder, having an extended 'collar-;portion, a filler block providing an innerwall for the collar of the piston, as well as a. means for restricting the size of the combustion chamber. and means torby-passing the unused fuel and lubricating particles to prevent their passage down the cylinder walls.

4. An internal combustion engine, includmg valve and spark mechanism, an elon,v gated cylinder member, fashioned to provide a sleeve member, a reciprocating piston in said cylinder havingan extended m1, lar portion "slidable in said'fsjleeve-and means for by -pass'ing unused fuel and lubricating particles i n amanner to be used in sizeceedi'ng engine .operations.

5, An internal combustion engine, including. valve and spark mechanism, and elongated cylinder member, a block located in.

said cylinder member in a manner to, re strict the combustion chamber-therein, and

piston in said cylinder, having an extended to provide a flange portion, a reciprocating collar portion slidable between the cylinder wall and flange member, and means for by- Passing any nausea fue e lu ri a ing Pan ticles in a manner to be consumed in succeeoling engine operations.

6. An internal combustion engine, including valve and spark mechanism, an elongated cylinder member, fashioned to provide a sleeve member, a reciprocating: piston in said cylinder, having an extended collar portion slidable in said sleeve and means for maintaining a continual oil seal between the cylinder and piston including an air space above the piston and a connectionwith the valve members.

7. An internal combustlon engine 1ncludmg valve and spark mechanlsm, an elonvide a sleeve member, a reciprocating piston having an extended collar portion slidable in said sleeve and means for providing a continual oil seal between the piston and cylinder and at the same time lay-passing the Waste fuel andlubricating particles including a connection with the valve mechanism whereby the valve action maintains the oil seal as Wellas drawing off the Waste par-- ticles from the combustion chamber, due to the suction action thereof.

In testimonywhereof I aflix my signature.

' WALTER F. V0515. 

